72267451 has 2 divisors, whose sum is σ = 72267452. Its totient is φ = 72267450.

The previous prime is 72267443. The next prime is 72267467. The reversal of 72267451 is 15476227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72267451 - 2³ = 72267443 is a prime.

It is not a weakly prime, because it can be changed into another prime (72267751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36133725 + 36133726.

It is an arithmetic number, because the mean of its divisors is an integer number (36133726).

Almost surely, 2^72267451 is an apocalyptic number.

72267451 is a deficient number, since it is larger than the sum of its proper divisors (1).

72267451 is an equidigital number, since it uses as much as digits as its factorization.

72267451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 34.

The square root of 72267451 is about 8501.0264674332. The cubic root of 72267451 is about 416.5312396854.

The spelling of 72267451 in words is "seventy-two million, two hundred sixty-seven thousand, four hundred fifty-one".